1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Homematic IP HmIP-FSM16 Smart Home Flush-Mount Switch Actuator 16 A. This device is designed to integrate into your existing Smart Home system, enabling the switching of electrical loads and precise energy consumption measurement.
2. Safety Information
WARNING: Electrical Hazard!
Installation and operation of this device on a 230 V / 50 Hz network must only be performed by a qualified electrician. Failure to comply with these instructions can result in fire, electric shock, or other injuries.
- Ensure the main power supply is disconnected before any installation or wiring work.
- Adhere to all local and national electrical codes and regulations.
- Do not open or modify the device.
- Keep the device away from moisture and extreme temperatures.
3. Product Overview
The Homematic IP HmIP-FSM16 is a compact flush-mount switch actuator designed for smart home integration. It allows for the switching of high-power electrical loads and provides accurate energy consumption measurement.

Figure 1: Front view of the HmIP-FSM16 Switch Actuator showing technical specifications and dimensions.
Key Features:
- High Switching Capacity: Supports loads up to 3680 W (16 A) for up to 20 minutes, with a continuous load of 2760 W.
- Precise Energy Measurement: Measures power consumption with an accuracy of +/-0.03 W, detecting even low standby consumption from 0.01 W.
- Compact Design: Suitable for installation in standard flush-mounted boxes or surface-mounted distribution boxes (e.g., ELS Spelsberg Abox 25 with IP65 rating).
- Versatile Application: Can be used in damp cellars or outdoor areas when installed in an appropriate IP65-rated enclosure.
- Flexible Control: Operable via the Homematic IP app, Homematic IP remote control, or wireless wall buttons.
4. Setup
The HmIP-FSM16 requires a Homematic IP Access Point in combination with the free app (free cloud service), the Smart Home Central CCU3, or a partner solution for operation.
4.1 Installation by a Qualified Electrician
As previously stated, the installation of this device must be carried out by a qualified electrician. The device is designed for flush-mount installation.

Figure 2: Dimensions and installation considerations, including the need for a neutral conductor.
4.2 Wiring
The device requires a neutral conductor for proper operation. Follow the wiring diagram provided by your qualified electrician or in the detailed user manual available on the Homematic IP website.

Figure 3: Front view of the actuator.

Figure 4: Side view of the actuator.

Figure 5: Back view of the actuator.
4.3 Pairing with Homematic IP System
Once physically installed, pair the HmIP-FSM16 with your Homematic IP Access Point or CCU3 using the Homematic IP app. Follow the on-screen instructions in the app for the pairing process.

Figure 6: A Homematic IP Access Point is required for operation.
5. Operating
The HmIP-FSM16 allows for convenient control of connected devices and monitoring of their energy consumption.
5.1 Control via Homematic IP App
Use the Homematic IP app on your smartphone or tablet to switch connected loads on or off, create schedules, and view energy consumption data.

Figure 7: Control lamps and electrical appliances via the Homematic IP app.
5.2 Control via Remote or Wall Button
The actuator can also be controlled using a Homematic IP remote control or a compatible wireless wall button.

Figure 8: Automatic switching of lights or electrical devices based on motion or manually with Homematic IP buttons.
5.3 Energy Consumption Measurement
The device continuously measures the power consumption of the connected load. This data is accessible through the Homematic IP app, allowing you to monitor and optimize energy usage.

Figure 9: Suitable for switching kitchen appliances and large electrical devices.
5.4 Smart Home Integration
The HmIP-FSM16 is compatible with Google Assistant and Amazon Alexa, allowing for voice control and integration into broader smart home routines.
6. Maintenance
The Homematic IP HmIP-FSM16 Switch Actuator is designed for maintenance-free operation. No user-serviceable parts are inside the device.
- Cleaning: Use a soft, dry cloth to clean the exterior of the device. Do not use any abrasive cleaners or solvents.
- Inspection: Periodically check for any visible damage or loose connections. If any issues are found, contact a qualified electrician for inspection.
7. Troubleshooting
If you encounter issues with your HmIP-FSM16, please refer to the following common troubleshooting steps:
- Device Not Responding: Check the power supply to the device. Ensure it is correctly wired and receiving power. Verify that the Homematic IP Access Point or CCU3 is operational and connected to the internet.
- App Connectivity Issues: Ensure your smartphone or tablet is connected to the internet and the Homematic IP app is up to date. Restart the app and try again.
- Inaccurate Measurement: Confirm that the device is correctly installed and the load is within the specified limits.
- Pairing Problems: Refer to the Homematic IP app's pairing guide or the detailed manual on the Homematic IP website for specific instructions. Ensure the device is within range of the Access Point/CCU3.
For complex issues or if troubleshooting steps do not resolve the problem, please contact Homematic IP technical support.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | HmIP-FSM16 |
| Manufacturer | eQ-3 |
| Dimensions (L x W x H) | 4.1 x 5.4 x 3.3 cm (41 x 54 x 33 mm) |
| Weight | 47 grams |
| Voltage | 230 Volts AC |
| Frequency | 50 Hz |
| Max. Power | 3680 Watts |
| Max. Current Rating | 16 A |
| Relay Rating | 230V / 50Hz / 12A |
| Operating Mode | ON-OFF |
| Switch Type | Remote control, 16-way |
| Connector Type | Terminal block, Quick connection |
| Material | Brass (for terminals) |
| Certification | REACH |
| Batteries Required/Included | No |
| Components Included | Homematic IP Switch Actuator (16 A) - Flush-mounted user manual |
9. Warranty and Support
9.1 Spare Parts Availability
Spare parts for this product are available for 1 year from the date of purchase.
9.2 Technical Support
For any questions or assistance, please contact the Homematic IP technical support center:
Phone: +49 491 6008 683
Operating Hours: Monday to Friday, 9:30 AM to 4:00 PM (CET)
For more detailed product information and additional resources, please visit the official Homematic IP website.





